Bug when creating a level (image of level appear for no reason in foreground)

it’s seems to happen when i select something in my scene or when i move in it!

bump

It doesnt appear in all my scene, only this one.
The orthographic image seem to appear (sometimes flickering) only when i look in a certain direction
I cant click or more it

Can anyone help me? Its really annoying.
Thank you

Extra camera?

I checked how to activate/deactivate extra camera into the editor and couldnt find it. I searched if there was more camera in the level. There was some but all deactivated. Then i realised the bug was appearing when i was looking at water only and found out the culprit!
The script Planar Reflection: Reflection layers seem to reflect my current camera…which is strange. I removed the “Default” layer and it’s gone! Yay~